GBT K418

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GBT K418

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K418 Application:Age hardening type Nickel base alloy

Chemical composition(mass fraction)(wt.%) of the K418
C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) B(%) Nb(%) Al(%) Ti(%) Other(%)
0.09-0.14 Max 0.5 Max 0.5 Max 0.015 Max 0.015 11.5-13.5 Balance 3.80-4.80 0.006-0.020 1.80-2.50 5.50-6.40 0.50-1.00 Zr :0.06-0.15

Mechanical properties of grade K418

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
957 (≥) 475 (≥) 42 32 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical properties of grade K418

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
567 (≥) 822 (≥) 34 23 44 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
778 549 544 - - -

K418 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED